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Basic Stoichiometry

Authored by Amy Zalevskiy

Chemistry

10th - 12th Grade

NGSS covered

Used 71+ times

Basic Stoichiometry
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8 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

What is the molar mass of C6H12O6?

180.18
180.12
180.24
180.06

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-4

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

How many moles are in 98.3 g of Al(OH)3?

2.14 mol
1.26 mol
6.63 mol
5.9 mol

Tags

NGSS.HS-PS1-7

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

How many grams is 1.2 moles of Neon?

0.05 grams
16.6 grams
21.2 grams
24 grams

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Using the balanced equation below,
Mg(s)   +  2HCl(aq)  -->   MgCl₂(aq)   + H₂(g)
How many moles of HCl are consumed in the production of 7.5 moles of MgCl₂?

3.8 moles
15 moles
7.5 moles
23 moles

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Using the balanced equation below,
 CaC₂(s)   +  2H₂O(l)   -->   C₂H₂(g)   +   Ca(OH)₂(aq)
how many grams of Ca(OH)₂ would be formed with 3.20 moles of CaC₂?

119 g
21.2 g
114 g
237 g

Tags

NGSS.HS-PS1-7

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Given the following reaction  2NaClO3 (s) --> 2NaCl (s) + 3O2 (g). How many grams of NaCl are produced when 80.0 grams of O2 are produced?

500 g Nacl
96.7 g NaCl
6960 g of NaCl

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

Using the following equation:
4NH3(g) + 5O2(g) --> 4NO(g) + 6H2O(l)
How many grams of oxygen gas are needed to react with 56.8 grams of ammonia?

45.08 g O2
133.33 g O2
260.77 g O2
75.92 g O2

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